aleph1.co.uk Git - yaffs-website/blob - web/core/modules/system/src/Plugin/Condition/CurrentThemeCondition.php

   1 <?php
   2
   3 namespace Drupal\system\Plugin\Condition;
   4
   5 use Drupal\Core\Condition\ConditionPluginBase;
   6 use Drupal\Core\Extension\ThemeHandlerInterface;
   7 use Drupal\Core\Form\FormStateInterface;
   8 use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
   9 use Drupal\Core\Theme\ThemeManagerInterface;
  10 use Symfony\Component\DependencyInjection\ContainerInterface;
  11
  12 /**
  13  * Provides a 'Current Theme' condition.
  14  *
  15  * @Condition(
  16  *   id = "current_theme",
  17  *   label = @Translation("Current Theme"),
  18  * )
  19  */
  20 class CurrentThemeCondition extends ConditionPluginBase implements ContainerFactoryPluginInterface {
  21
  22   /**
  23    * The theme manager.
  24    *
  25    * @var \Drupal\Core\Theme\ThemeManagerInterface
  26    */
  27   protected $themeManager;
  28
  29   /**
  30    * The theme handler.
  31    *
  32    * @var \Drupal\Core\Extension\ThemeHandlerInterface
  33    */
  34   protected $themeHandler;
  35
  36   /**
  37    * Constructs a CurrentThemeCondition condition plugin.
  38    *
  39    * @param array $configuration
  40    *   A configuration array containing information about the plugin instance.
  41    * @param string $plugin_id
  42    *   The plugin_id for the plugin instance.
  43    * @param mixed $plugin_definition
  44    *   The plugin implementation definition.
  45    * @param \Drupal\Core\Theme\ThemeManagerInterface $theme_manager
  46    *   The theme manager.
  47    * @param \Drupal\Core\Extension\ThemeHandlerInterface $theme_handler
  48    *   The theme handler.
  49    */
  50   public function __construct(array $configuration, $plugin_id, $plugin_definition, ThemeManagerInterface $theme_manager, ThemeHandlerInterface $theme_handler) {
  51     parent::__construct($configuration, $plugin_id, $plugin_definition);
  52     $this->themeManager = $theme_manager;
  53     $this->themeHandler = $theme_handler;
  54   }
  55
  56   /**
  57    * {@inheritdoc}
  58    */
  59   public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
  60     return new static(
  61       $configuration,
  62       $plugin_id,
  63       $plugin_definition,
  64       $container->get('theme.manager'),
  65       $container->get('theme_handler')
  66     );
  67   }
  68
  69   /**
  70    * {@inheritdoc}
  71    */
  72   public function defaultConfiguration() {
  73     return ['theme' => ''] + parent::defaultConfiguration();
  74   }
  75
  76   /**
  77    * {@inheritdoc}
  78    */
  79   public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
  80     $form['theme'] = [
  81       '#type' => 'select',
  82       '#title' => $this->t('Theme'),
  83       '#default_value' => $this->configuration['theme'],
  84       '#options' => array_map(function ($theme_info) {
  85         return $theme_info->info['name'];
  86       }, $this->themeHandler->listInfo()),
  87     ];
  88     return parent::buildConfigurationForm($form, $form_state);
  89   }
  90
  91   /**
  92    * {@inheritdoc}
  93    */
  94   public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
  95     $this->configuration['theme'] = $form_state->getValue('theme');
  96     parent::submitConfigurationForm($form, $form_state);
  97   }
  98
  99   /**
 100    * {@inheritdoc}
 101    */
 102   public function evaluate() {
 103     if (!$this->configuration['theme']) {
 104       return TRUE;
 105     }
 106
 107     return $this->themeManager->getActiveTheme()->getName() == $this->configuration['theme'];
 108   }
 109
 110   /**
 111    * {@inheritdoc}
 112    */
 113   public function summary() {
 114     if ($this->isNegated()) {
 115       return $this->t('The current theme is not @theme', ['@theme' => $this->configuration['theme']]);
 116     }
 117
 118     return $this->t('The current theme is @theme', ['@theme' => $this->configuration['theme']]);
 119   }
 120
 121   /**
 122    * {@inheritdoc}
 123    */
 124   public function getCacheContexts() {
 125     $contexts = parent::getCacheContexts();
 126     $contexts[] = 'theme';
 127     return $contexts;
 128   }
 129
 130 }